Add ty::Visibility::is_public()

compiler/rustc_middle/src/ty/mod.rs

@@ -333,6 +333,10 @@ impl Visibility {
             Visibility::Invisible => false,
         }
     }
+
+    pub fn is_public(self) -> bool {
+        matches!(self, Visibility::Public)
+    }
 }
 
 /// The crate variances map is computed during typeck and contains the

compiler/rustc_middle/src/ty/print/pretty.rs

@@ -2404,7 +2404,7 @@ fn for_each_def(tcx: TyCtxt<'_>, mut collect_fn: impl for<'b> FnMut(&'b Ident, N
     // Iterate external crate defs but be mindful about visibility
     while let Some(def) = queue.pop() {
         for child in tcx.item_children(def).iter() {
-            if child.vis != ty::Visibility::Public {
+            if !child.vis.is_public() {
                 continue;
             }